Which of the following strategies could lead to better task execution efficiency?

The strategy of 'All of the above' is the correct choice because each listed strategy contributes to enhancing task execution efficiency in distinct yet complementary ways.

Bottleneck removal focuses on identifying and eliminating constraints within a process that slow down overall performance. By addressing these bottlenecks, tasks can flow more smoothly and resources can be utilized more effectively, leading to a notable improvement in efficiency.

Changing the task sequence involves rearranging the order in which tasks are performed. This can reduce waiting times, minimize redundancy, and ensure that resources are optimally allocated to tasks as they arise, thereby accelerating the overall process and improving efficiency.

Redefining boundaries pertains to clarifying roles, responsibilities, and the scope of tasks. This can help eliminate ambiguity, reduce overlaps, and ensure that every team member is working effectively within their defined parameters, which also boosts task execution efficiency.

Each of these strategies independently contributes to process improvements, and together they provide a comprehensive approach to enhancing task execution efficiency, making 'All of the above' the most suitable response.